I'd say you might have to start over again from scratch, the only thing really going right here is the turn on the chest and the arms from about shoulder to elbow.
You seem to be putting either not enough motion in, or too MUCH motion in. Try looking at how some other games approach walk cycles like this, and remember that arm swings are intended as a counter-weight. When the right leg is as forward as it can be, the right arm should be as far back as it can be.
Another tip: Start with 4 frames and work out from there! Frame 1 is static, frame 2 right leg forward left back, frame 2 same as 1, then frame 4 LEFT leg forward and RIGHT leg back.
Like I've done with this slime sprite!

becomes
